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Contents
# frozen_string_literal: true
require 'active_support/inflector'
module EacRubyUtils
class Inflector
class << self
VARIABLE_NAME_PATTERN = /[_a-z][_a-z0-9]*/i.freeze
# Convert a string to a variable format: first character as a lowercase letter or underscore
# and other as a lowercase letter, underscore or numbers.
# @param string [String] The source string.
# @param validate [Boolean] Affect the outcome when the result builded is not in a valid
# variable format. If `true`, it raises a {ArgumentError}. If `false`, return `nil`.
# @return [String, nil]
# @raise [ArgumentError]
def variableize(string, validate = true)
r = ::ActiveSupport::Inflector.transliterate(string).gsub(/[^_a-z0-9]/i, '_')
.gsub(/_+/, '_').gsub(/_\z/, '').gsub(/\A_/, '').downcase
m = VARIABLE_NAME_PATTERN.match(r)
return r if m
return nil unless validate
raise ::ArgumentError, "Invalid variable name \"#{r}\" was generated " \
"from string \"#{string}\""
end
end
end
end
Version data entries
87 entries across 87 versions & 3 rubygems